Package org.apache.roller.business.search.operations

Source Code of org.apache.roller.business.search.operations.ReIndexEntryOperation

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
*  contributor license agreements.  The ASF licenses this file to You
* under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.  For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
/* Created on Jul 16, 2003 */
package org.apache.roller.business.search.operations;

import java.io.IOException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.apache.roller.business.search.IndexManagerImpl;
import org.apache.roller.business.search.FieldConstants;
import org.apache.roller.business.Roller;
import org.apache.roller.business.RollerFactory;
import org.apache.roller.pojos.WeblogEntryData;

/**
* An operation that adds a new log entry into the index.
* @author Mindaugas Idzelis (min@idzelis.com)
*/
public class ReIndexEntryOperation extends WriteToIndexOperation {
   
    //~ Static fields/initializers =============================================
   
    private static Log mLogger =
            LogFactory.getFactory().getInstance(AddEntryOperation.class);
   
    //~ Instance fields ========================================================
   
    private WeblogEntryData data;
   
    //~ Constructors ===========================================================
   
    /**
     * Adds a web log entry into the index.
     */
    public ReIndexEntryOperation(IndexManagerImpl mgr, WeblogEntryData data) {
        super(mgr);
        this.data = data;
    }
   
    //~ Methods ================================================================
   
    public void doRun() {
        IndexReader reader = beginDeleting();
        try {
            if (reader != null) {
                Term term = new Term(FieldConstants.ID, data.getId());
                reader.delete(term);
            }
        } catch (IOException e) {
            mLogger.error("Error deleting doc from index", e);
        } finally {
            endDeleting();
        }
       
        IndexWriter writer = beginWriting();
        Roller roller = RollerFactory.getRoller();
        try {
            if (writer != null) {
                writer.addDocument(getDocument(data));
            }
        } catch (IOException e) {
            mLogger.error("Problems adding doc to index", e);
        } finally {
            if (roller != null) roller.release();
            endWriting();
        }
    }
}
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